--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/variables.cc Mon Jan 13 23:44:15 2014 +0200
@@ -0,0 +1,89 @@
+/*
+ Copyright (c) 2012-2014, Santeri Piippo
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of the <organization> nor the
+ names of its contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "object_writer.h"
+#include "stringtable.h"
+#include "variables.h"
+#include "parser.h"
+
+list<script_variable> g_GlobalVariables;
+list<script_variable> g_LocalVariables;
+
+// ============================================================================
+// Tries to declare a new global-scope variable. Returns pointer
+// to new global variable, null if declaration failed.
+script_variable* declare_global_variable (type_e type, string name)
+{
+ // Unfortunately the VM does not support string variables so yeah.
+ if (type == TYPE_STRING)
+ error ("variables cannot be string\n");
+
+ // Check that the variable is valid
+ if (find_command_by_name (name))
+ error ("name of variable-to-be `%s` conflicts with that of a command", name.chars());
+
+ if (IsKeyword (name))
+ error ("name of variable-to-be `%s` is a keyword", name.chars());
+
+ if (g_GlobalVariables.size() >= g_max_global_vars)
+ error ("too many global variables!");
+
+ for (int i = 0; i < g_GlobalVariables.size(); i++)
+ if (g_GlobalVariables[i].name == name)
+ error ("attempted redeclaration of global variable `%s`", name.chars());
+
+ script_variable g;
+ g.index = g_GlobalVariables.size();
+ g.name = name;
+ g.statename = "";
+ g.value = 0;
+ g.type = type;
+
+ g_GlobalVariables << g;
+ return &g_GlobalVariables[g.index];
+}
+
+// ============================================================================
+// Find a global variable by name
+script_variable* find_global_variable (string name)
+{
+ for (int i = 0; i < g_GlobalVariables.size(); i++)
+ {
+ script_variable* g = &g_GlobalVariables[i];
+
+ if (g->name == name)
+ return g;
+ }
+
+ return null;
+}
\ No newline at end of file